The etiology of primary hypertension is more complex. The risk factors for its development are divided into two categories: unmodifiable and modifiable. The former mainly includes genetic factors, age, gender and so on. Modifiable risk factors are mainly caused by some poor lifestyle, which plays a vital role in the prevention of hypertension. 1, weight factors Weight and blood pressure have a high correlation. Relevant data show that the prevalence of hypertension in overweight and obese people is 2 to 3 times higher than in people with normal weight. Studies have shown that high body mass index is an independent risk factor for increased blood pressure, for obese people, weight loss can reduce their blood pressure. Recent studies have also found that not only are overweight people prone to hypertension, but the distribution characteristics of body fat are also associated with hypertension. Excessive body fat concentrated in the abdomen, the formation of centripetal obesity (usually measured by the waist / hip circumference ratio) the risk of hypertension is much higher than the general population. 2, dietary factors Epidemiological and clinical observations have shown that salt intake is closely related to the occurrence of hypertension, high sodium intake can make blood pressure rise, while low sodium diet can reduce blood pressure. In addition, low intake of potassium, calcium and magnesium, and insufficient intake of high-quality protein are also considered to be one of the factors that increase blood pressure. Excessive intake of saturated fatty acids, that is, the ratio of unsaturated fatty acids and saturated fatty acids is reduced, it is believed to make the blood pressure rise. 3, smoking Nicotine and other harmful substances in tobacco into the blood will cause peripheral vasoconstriction, resulting in increased blood pressure. Long-term heavy smoking can cause continuous contraction of small arteries, and over time, the smooth muscle on the arterial wall of small arteries will degenerate, damaging the intima, thickening the vessel wall of small arteries, and causing systemic small arteriosclerosis. Hypertensive patients smoke a lot, which leads to heart disease and the risk of death from heart disease is greatly increased. 4, drinking alcohol and the relationship between cardiovascular disease, has received considerable attention in recent years. A small amount of red wine, may have a preventive effect on coronary heart disease, but long-term moderate (50 ml of alcohol per day) or more drinking, certainly have a negative impact on blood pressure. Long-term drinking of white wine more than 50 ml per day is a risk factor for the development of hypertension. 5, lack of exercise exercise not only can make the systolic and diastolic blood pressure drop (about 6 to 7 mmHg), and to reduce weight, enhance physical strength, reduce insulin resistance is beneficial. Hypertensive patients can choose different ways of jogging, brisk walking, tai chi, etc. according to their age and physical condition. General exercise 3 to 5 times a week, each lasting 20 to 60 minutes. 6, mental factors Tension is caused by internal and external tension factors, there is a clear subjective urgency, the corresponding nervous behavior and the accompanying physiological and psychological changes and a series of activity processes. Tension can cause a rise in blood pressure, increased heart rate, increased blood supply to the head and muscles, reduced blood supply to the internal organs, if too strong and persistent or repeated episodes, can lead to functional and organic pathological damage to the cardiovascular system. Therefore it is important to maintain a healthy mental state, reduce mental stress and avoid depression, etc. Each person can avoid or postpone the onset of hypertension by improving his or her lifestyle according to his or her own situation.